Review on 🎧 4 Way 3.5mm Stereo Audio Switch: Manual Selector Splitter Box for Audio Sharing by Rich Montgomery

Although it is a metal box, it receives a lot of electromagnetic interference. The external speakers produce an additional hiss in the background that correlates fairly well with what the laptop is doing - a certain web page starts up an intermittent animation, and as the animation continues, I hear additional hiss. I replaced my audio cables with shielded ones, but that only reduced it a bit; What worked was replacing this switch with another one: https://smile.amazon.com/gp/product/B07Q1W4484/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1 and now I'm happy - no more hiss and clean audio output.